Use of latex for forming fabric seams



Patented June 12, 1928 "UNITED STATES PATENT OFFICE.

CHAUNGEY C, LOOMIS, OFYONKERS, AND GERALD E. PERRY, OF BROOKLYN, NEW

YORK, ASSIGNORS, BYIMESNE ASSIGNMENTS, T UNITED STATES PANY, A. CORPORATION OF NEW JERSEY.

RUBBER com- USE OF LATEX FOR FORMING FABRIC SEAMS.

No Drawing.

This invention relates to the seaming of cloth, andwhile the preferred embodiment thereof will be hereinafter described as seams for cotton or jute bags, it will be readily manifest that the invention has other and valuable application.

A principal object of the invention is the provision of a seam of greater strengththan the sewn seams of commerce, which .will not havea tendencyto gap open between stitches and which can be more cheaply provided than is possible where the seam is stitched. The invention contemplates the provision of theseam by binding adjacent edges together through the use of a rubber binder of powerful strength and easy application. We believe that the best results may be obtained by the employment of partially coagulated latex brought to, a degree of coagulation rendering the material a paste, according to the disclosure of Patent No. 1,599,282 issued on September 7, 1926 to Loomis and Stump, which may be readily spread or applied to the material. A binding material is spread upon or along one edge to be united and the other edge then laid thereover and pressed home. Where the partially coagulated latex is employed moderate pressure is suflicient to squeeze out the water and complete co- 80 agulation of the latex mixture in which rub- Application filed April 10, 1923. Serial No. 631,212.

ber vulcanization may-be accomplished before or after the same is formed. That is to say, the latex may itself be vulcanized before it is applied or it may include the fillers and vulcanizing ingredients so that the vulcanization occurs after conversion of the latex into rubber proper. Where this procedure is employed in the manufacture of cotton or jute bags the bag is practically seamless and tests have demonstrated that the oint between the edges isfar stronger than that provided in the ordinary se'amcd bag. It will be readily manifest that the and vulcanizing.

CHAUNCEY o. LooMIs. GERALD. E. PERRY. 

